Quite possibly the funniest not-meant-to-be-funny-movie ever, starring Arnold Schwarzenegger. Things he does in this movie include:
-Rips a huge metal pole off a wall and hurls it at main antagonist, striking him in chest and impaling him
-Dual wields M-60's with near infallible accuracy.
-Kills half a dozen people with a single grenade that explodes on impact
-Jumps off a plane from like 300 feet in the air and lands completely unharmed
-Chops off some dude's arm with an axe
-Hurls a buzz saw at some dude and slices his head in half
-Manages not to get hit by 2000+ bullets fired at him in a period of 3 min., without any cover or attempts to dodge
-Fires a rocket launcher(with 4 rockets in it)at a vehicle and blows it up, turns around and fires at another vehicle and blows it up, then blows up a couple more buildings with it, drops rocket launcher, and walks away casually.
-You get the idea.

(v.) To not wear underwear. The origins for this are either "out in the open" or "ready for action". Maybe others.

(n.) A non-stop arnie movie with him jumping from an aeroplance, overturning a porsche, and killing entire armies without a scratch. Far from his best (terminator series, predator and jingle all the way), but better than that cold heat one.

When a guy is not wearing any underwear. This is done by Marines or Soldiers during forced marches or "humps" to cut down on shaffing. Must be done in conjunction with a liberal amount of Gold Bond or baby powder.

My girlfriend thinks it's hot when I go commando. She doesn't know that I do it because I am to lazy to do laundry.